Pipe-tightening tool



Sept. 30, 1930. J. F. HEER PIPE TIGHTENING TOOL Filed Aug. 1-5, 1925 INVENTOR lV/f/VESSES.

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Patented Sept. 30, 1930 UNITED STATES PA ENT OFFICE JOSEPH F. HEER, OE WASHINGTON, PENNSYLVANIA, ASSIGNOR TO THE RIDGE TOOL COMPANY, OF NORTH RIDGEVILLE, OHIO, A CORPORATION OF OHIO rrrn 'rrsnrnnme moon 1 Application as August 15, 1925 1 Serial No. 50,344.

My invention relates to pipe tightening tools, particularly for the use of plumbers, steam, gas and pipe litters. I

An object of the invention is to provide 5 apparatus by which pipes, fittings, and the like, of large'sizes, maybe readily tight The apparatus illustrated comprises'two' gripping devices, A and B adapted to re spectively grip two parts which it IS desired to rotate relative to each other as for-instance a union or other fitting 1 and a pipe 2, there being force-increasing means interposed between the gripping devices tor relatively rotating them.

The gripping device A which is shown'as 30 engaging the fitting, is illustrated as a type of vise or chuck, in th1s case consisting ot a crescent or U-shaped frame 3 which is positioned about the pipe and secured thereto by set screws 4;, and remains in thisposition until the rotating operation is completed and it is desired to remove the apparatus.

The other gripping device B is illustrated as being substantially a conventional pipe wrench consisting of a stationary jaw 5 having a shank 6 and an adjustable jaw 7 which is moved toward or away from the stationary jaw by a nut 8 threaded on a threaded shank 9 of the movable jaw, the aws being adapted for a limited angular movement to cause them to grip or release the pipe, this action being similar to that of pipe wrenches now in use and well understood in the art. The wrench-like gripping device B is adapted to engage the second part which it is desired to rotate and to grip the same when being rotated in the desired direction but to be released therefrom when it IS beingirotated 1n the opposite d1rect1on, so that by being oscillated relative the first mentioned gripp ng device the two elements will i'nterinit 3- tently be 'relat1vely rotated and their connec-' tion thus tightened orloosened; Fixed to the frame 3 ofthefirst grippnig device is a pivot 10, extending in a direction generally parallel to the axis 01" the objects to be gripped, and mounted on this pivot is an actuatnig handle or lever 11 illustrated as being a lever of the bell crank type and having a short arm 12provided with an aperture 13 parallel to the pivot. The shank of the stationary jaw of the wrench-like gripping ele- 'ment is provided with a series of holes 14 and a U shaped link15 is adapted to have ts ends inserted in the opening 13'and. any

one of the holes 14. The force supplied to the handle 11 is multiplied through the shortar1n,l1nk, and the leverage of the shank of thewrench, the amount of multiplication of the force beingvaried by the hole inthe wrench shank in wh ch the link is inserted.

The operation of the device is as follows:

11 lrst, the vise-like engaging dev1ce A1s placed about a pipe or fittingwith which it ,is desired that another shall be connected or disconnected, preferably to a part that it-is desired shall remain stationary. The set 1 screws 4 are tightened to firmly lock the de-' vice in place, and the wrench B is adjusted to engage the other element whlch' it is desired to rotate relative that held by the vise, and held with its jaws en'ibracing the'same. T he lever is next oscillated back and forth, causmg the wrench to alternately engage and turn the pipe and to release and move back about thesame, it being obvious that the link is inserted 1n the holes 14 which gives the leverage desired.

When the'pipe and its fitting are properly tightened or loosened, the set screws are loosened and the apparatus removed.

While Ih ave described the illustrated embodiment of my invention in some particular ity, obviously many other embodiments will readily occur to those skilled in the art to which it appertains, and I do not, therefore, desire to be limited to the precise details shown and described but claim as my invention all embodiments thereof coming Within the scope of the appended claims.

What I claim is:

1. A pipe tightening to'ol comprising a selfsupporting clamp and a Wrench each adapted to engage pipe sections in parallel planes, a lever pivoted on said clamp about a pivot parallel to the axis of the'pipe, and means connecting said lever to said wrench.

2. A pipe tightening tool comprising a seltsupporting clamp and a Wrench, said members being adapted to engage pipe sections closely adjacent each other, a lever pivoted to one of said members to rotatein a plane substantially normal to the axis of a pipe, and means connecting said lever to the other member.

3. A pipe tightening tool comprising a self-supporting clamp and a Wrench each :ulapted to engage pipe sections closely adjacent each other, a lever pivoted to one of said members and movable in a plane substantially normal to the axis 01" a pipe, said lever having a long arm constituting an operating handle and a short arm connected by pivoted linkage to the other of said members.

4. A pipe turning tool comprising a yoke adapted to embrace a pipe in a plane normal to the axis thereof, opposed pipe-engaging means carried by said yoke, a pipe wrench engageable with said pipe adjacent said clamp and movable in a plane parallel there to, mutually inclined toothed jaws on said Wrench, a lever movable iii-the plane of said wrench, a fulcrum for said lever in the plane of said Wrench and supported by said yoke, and alink positively connecting said lever and said wrench for either pulling or pushing impulses.

In testimony that I claim the foregoing as my own invention, I have hereunto set my hand.

JOSEPH F. HEER. 

